Printing-cylinder.



W. H. BANZETT.

PRINTING CYLINDER.

APPLICATION FILED 11.28. 1911.

Patented 11116.31, 1912.

3 SHEETS-SHEET 1.

L G CYLINDER.

N FILED AP Patented Dec. 31, 1912.

3 SHEETS SHEET 2.

W. H. BANZETT.

PRINTING CYLINDER.

APPLICATION FILED APR.2a,1911.

Patented Dec. 31, 1912.

3 SHEBTS-SHEBT 3.

I" l2. 5/by 79 15 26 16 39 16 151s 1x9. 10. X3 E15/.11.

Inventor:

PVN/fesses:

` STATES BATENT onirica.

l1a. 3mm; or nanesmrman, new '.masmr, AssIoNon 'ro AMERICAN *Lrmoommc comraNY. or NEW Yoan. N.' Y., a conrona'rron or maw Yoan.

PRINTING-CYLINDER.

Specification of 'Letten Patent.

Patented Dee. 31, 1912.

i Application illed April y28, 1911. Serial Ro. 828,880.

To all whom 'it 'may concern:

Be it known that I, lVrLLIAM H. BANzE'i'r, a citizen of the United States, and a resident of Bergenfield, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Printing-Cylinders, of which the following is a specification.

This invention relates to printing cylinders and particularly to that class thereof in which the printing surface is formed on copper, zinc, aluminum or other suitable sheet material and wrapped around the cylinder and secured snugly in place thereon.

One object of the present invention is to provide a cylinder of the class described aving a continuous cylindrical surface.

Another object is to provide sim le and efficient means for esta lisliing an( maintaining the enwra ping' printing sheet at a predetermined an uniform distance at. all points from the axis of revolution and under the requisite tension.

To these ends my improvements comprise means illustrated in their preferred form in the drawings accompanying this specification, wherein- Figure 1 is a lan view partly in section on line B, B of i ig. 16, of a printing cylinder embed ing my improvements. Fig. 2 is an end e ovation corresponding therewith. Fig. 3 is a detail cross sectional view on line 1, 1 of Fi 1. Fig. 4 is an end elevation of a detai on an enlarged scale. Figs. 5 to 14 inclusive illustrate modifications of the means for joining the edges of the printing plate. Figs. 15 and 10 are end elevations, partly in section on line A, A of Fig. 1 showing two steaps respectively in assembling my improv cylinder.

Heretofore in rotary printing from inlio surfaces it has been customary to use inders of copper or other suitable ninterial, havin continuous peripheries so that as said cylinders revolved an unbroken cylindrical surface was presented to the doctor for scraping o' the surface surplus ink. Such continuous cylinders are however expensive and require much room for storage and as they are heavy their delicate surfaces are easily injured. For these and other reasons their use is objectionable. There have also been devised several contrivances for securing a printing sheet about a cylinder and for straining that sheet to its seat.

ta CY But in the most of these devices of which I have knowledge there is an open and unbrid edspace the whole length of the cylinderI tween the ends of the enwrapping sheet. These devices while providing for the stora e of the printing sheets in ilat form prec ude the use of inta lio or hotoavure plates because said untiiridgec space in the assembled c linder cannot be jumped or crossed b the octor. My improvements are designe to overcome these objectionable features and to permit the use of intaglio plates which may be stored flat and wrapped and secured about the printing cylinder in such perfect jointure that they are practicallv continuous and so that a doctor may be efficiently used thereon.

Plate car ing cylinder 2 is provided with a suitable p ate su porting cylindrical surface 8 extending rom end to end thereof and comprising about of its periphery. The remaining fl, of t e periphery is cut away throughout the whole len th of said cylinder in symmetrical profile, ig. 2, similar to the profile of a truncated pyramid. On the face 4 thereof and occu ying the entire length and about two tiirds of the width thereof is clamp carrier 5. Said carrier is located on said face by means of tongue 6 of carrier 5 in engagement with groove 7 len hwise in face 4, and is secured means o screws as 8. Adjoinin sai'd c amp carrier to the left is a gear-bloc c comprising for convenience two sections 9, 10 abutting at the center cross line 1, 1, Fig. 1. Said gear-block sections are secured to clamp carrier 5 b means of screws as 11. Said clamp carrier and gear-block have a c lindrical outer profile 30, 33 respective y conformin to that of plate support.- ing surface 3. arrier 5 has a li i 12 overhanging to the right and gear-b oek 9, 10 has a similar lip 13 overhan ing to the left. Clamp carrier 5 is provide with a groove 14 throughout the length of face 30 thereof for the rece tion of tongue 23 or tongues 16, 18. Said) members 5 and 9, 10 are to all intents and purposes one with cylinder 2 and are made of separate pieces only to facilitate machinin and assembling. Groove 14 is dovetai ed or undercut at 15 for engagement with dovetailed portion 17 of tongue 16. A similar tongue 18 has a smilar dovetailed portion 1i) for engagement with holding means to be hereinafter described. Said tongues 16, 18 are right and left duplicates and abut each other in a plane through axis 20 of cylinder 2. One longitudinal edge 26 of printing plate 25, Fig. 4, is folded over and soldered into groove 27 of tongue 16 and the other edge 28 of said plate 25 is folded over and soldered into groove 29 of tongue 18. Then strips 22, 24 preferably of the same material as sheet are secured to the upper faces of tongues 16, 18 respectively between the folded over ends 26, 28 of plate 25 thus completing an unbroken and continuous cylindrical surface over which a doctor may be efficiently operated. Or if preferred I may fold over the edges as 26 of said plate 25 through only a portion of their length thus formin downwardly turned ears as 53, Fig. 11, integral with said plate. This arrangement permits the extension of the major portion of edge 54 of said plate 25 to vertical coincidence with front edge 79 of the tongue as 16, and openings as 80 out of which ears, as 53, have been folded may be filled with short lengths of strips correspending in cross section with strips 22 or 24. Or shorter ears as 81 may be formed from said plate 25, whereby a wall 82 remains in front of opening 83, Figs. 9 and 10, thus providing a continuous abutting edge 54. In this arrangement a filling piece 84, Fig. 9, is provided for cavity 83, Fig. 10.

For drawing tongues 16, 18 together and for pressing them securely against dovetailed face 15 of groove 14 I employ one or moreclamps as 32, 34, 36 varying in number according to the axial length of the cylinder. Said clamps are slidably mounted in seats as 35 to clamp 34 and have hook shaped members as 37 'or engagement ,with the dovetailed portion 19 of tongue 18. These clamps are moved in synchronism toward and from said tongue by the following means which will be descrlbed particularly in reference to clamp 34. Said clamp has `-a sleevelike extension, the iiside of which is threaded for engagement with screw 38 and having head 39 in which are spiral gear teeth. Said head is rotatably mountedlin gear-block 9, 10 and its teeth are in engagement with corresponding toothed portion 40 in gear-rod 41 rotatably mounted at right angles to screw 3 8 in said gear-block. Said gear-rod 41 extends from end to'end of gear-block 9, 10 and cylinder 2, and has collar 42 midway its length, in engagement with suitable bearings in the inner ends of sections 9 and 10 of said gearblock, to prevent endwise movement of said gear-rod. Squared'ends as 43 or other convenient means may be provided on gear-rod 41 for rotating said rod.

For securing tongue 16 in place while printing sheet 25 is being wrapped about the cylinder and tongue 18 seated, I provide one or more feet, as 44 in pocket 45, in clamp block 5. The upwardly extending lip of said foot engages seat 21 in said tongue and said foot is secured in place by screw 46.

In the modifications of Figs. 5, 6 and 7 I have illustrated clamp carrier 5 and gearblock 9, 10 as integral with each other and with the cylinder and as without the clamping means of Figs. 1, 2 and 3 for instance.'

In Fig. 5 -I have shown plate supporting surface 33 as continuous from ear 12 to ear 13, and plate 25 as a continuous hollow cylinder thus illustrating the adaptability of my improved straining means to cylindrical shells. In Fig. 6 I have illustrated ends 26, 28 of plate 25 fixed in block 23 and which block may have parallel sides 47, 48 fitting in groove 49 corresponding in profile with that of block 23. Or said block may be dovetailed as shown'in Fig. 3 for instance.` In Fig. 7 I have shown the two dovetailed tongues 16; 18 as fitting corresponding dovetailed groove 50. In this case I preferably employ means as pin 51 for locating end- `wise tongues 16, 18 relatively to each o-ther. The arrangement of1 said Fig. 7 is practicable for cylinders of. short length but for long cylinders where the friction of seating tongues 16, 18 would be excessive I taper said tongues as shown in Fig. 8, and of course taper receiving groove 50 correspondingly. By this means said tongues may be drawn together in close contact and securely seated.

In-the modification of Fig. 12 I have carj dence with the face of plate 25 and groove f 27`is made sufficiently Wide to admit key 85 beside lip 26 of plate 25.

In the modification of Fig. 13 I have shown lockin key 86 as dovctailed and as having face 8 thereof in cylindrical coincideiice with the face of plate 25.

In Fig. 14 I have divided tongue 18 longitudinally screwing members 88, 89 thereof together to secure strip 90 and lip 28 in place.

In several of the modifications illustrated for instance those of Figs. 13 and 14 it is feasible to form tongues 16, 18 of relatively harder metal than that of plate 25 whereby additional rigidity and wear may be had.'

It will be understood that the arrangements of Figs. 5, 6, 7 and 8 necessitate the sliding lengthwise of plate 25 onto cylinder 2 and which methodof assembling obviously requires the removal of said cylinder from at least one of its bearings.

. Turning nowto my improved means for straining plate 25 to its cylindrical form (Figs. 1, 2, 15 and 16) I provide one or more, preferably two, members 56, having cylindrical faces 57, 58 respective-lv movable into and out of conformity with*y l the plate supporting surface 3 of cylinder member substantially radially outwardly 'plate '25 attached thereto.

and inwardly I provide shaft 65 extending from endto end of cylinder -2 and having bearings therein. Said shaftis provided with an eccentric cylindrical portion or cam 67, at each end thereof for engagement with corresponding cylindrical bearings in links 62, 64 pivoted at 66, 68 respectively on either end of said member 55. Thus by rotat-ing said shaft 65 a half turn from the position of Fig. to the position of Fig. 16 member may be swung outwardly with its face 57 in continuous conformity with face 3 of cylinder 2, and by rot-ating said shaft 65a half turn from' the position of Fig. 16 to that of Fig. 15 said member 55 may be swung inwardly out of said conformity; For limiting the rotation of shaft 65 to a half rotation in each direction I provide stop blocks as f,or links as 62 to abut'4 against. It will be unde-rstood that mem-fr ber 56 is mounted and actuated in all rfav spects` similar to those just described in confit nection with member 55 being actuated by shaft 70 and its appurtenances. For causing said members 55 and 56 to swing outwardly .and inwardly in synchronism I- provide the following means: Fixed toth'e adjacent ends of shafts `and 70, at one end of said cylinder, are worm gears 73, 74 for engagement with worms 75, 76 all re'- spectively. Said worms are fixed to a cornmon shaft 71 suitably mounted in bearings, 77 fixed to the adjacent end of clamp blockA 5 and 72 in hub 52"of cylinder 2. Said sha-ft 71 may be squared at Lits outer end 78 for the reception of a wrench or handle. .Thus by rotating said shaft 71 shafts 65 andwill be rotated synchronously in op-4 posite directions. 4

The operation of my improved printing cylinder is as follow/s: Clamps as 32, 34, '36 being backed out to the right and members 55, 56 being swung inwardly, as in F 15, tongue 16 is inserted in place in groove 14 and foot\44 is screwed to its seat to hold said tongue during. further manipulation of Said plateis then wrapped about cylinder 2Aand tongue 18 to which is fixed the other edge of sa-id plate is pushed into said groove 14 (Fig. 15). Gearrod 41 is then rotated to actuate screws as 38 to draw inwardly to the left (Figs. 1 and 16) clamps, as 32, 34, whereby. tongue 18 is drawn sungly against tongue 16 and tongue 16 snugly seated against the left hand side of groove 14 (Fig. 16).

In some instances members 55 and 56 may be omitted and clamps as 32, 34 relied upon not only to hold tongues 16, -18 in place but also to strain sheet 25 to its seat. AHowever I prefer to employsaid members 55, 56 as they contribute materially to the facility and ease of operation in assembling my improved cylinder and are an important feature of my improvements. I then; rotate shaft 71 in clock-wise direction, Fig. 1, which through worm 75 and worm gear 73 rotates shaft 65 in anti-clock-Wise direction and through worm 76 and Worm gear 74 rotates shaft 70 in clock-wise direction, Fig. 15, thereby swinging members 55, 56 out wardly. with their faces 57, 58 respectively, in conformity with cylindrical face 3 of cylinder 2 and straining sheet 25 to its seatabout said cylinder 2. A'reversa'l of the described steps will free sheet 25 and permit its removal when the cylinder will be ready for the reception f another sheet.

I claim t@ 1. Asprinting cylinder including in combination, a fixed plate-supporting cylindrical 'niemben a movable plate-supporting member .having a cylindrical face and means for moving said moyable member radially outwardly into conformity with said fixed cylindrical memberl while" retaining its relative #position lengthwise thereto, said moving means being cam governed for locating said movable member in its positions of conformity and nonconformity with said cylindrical member.

2. A printing cylinder including in combination, a fixed' plate-supporting cylindrical member, a movable plate-supportlng member having a cylindrical face, means acting radially outwardly for moving said movable member into conformity with said fixed cylindrical member while retaining its relative position lengthwise thereto, and for locating said movable member in itsposition of conformity withvsaid fixed cylindrical member, aflexible printing plate encircling the cylinder and means for removably securing the longitudinal edges of said plate in abutting proximity in conformity with the cylinder.

3. -A printing cylinder including in combination, a fixed plate-supporting cylindrical member, a pivotally mounted plate-supporting member having a cylindrical face, means for swinging said pivotally mounted member with` said fixed cylindrical member and cam governed means-for locating said pivotally mounted memberl in its positions of conformity andnn-conformity with said fixed cylindrical member.

4. A printing cylinder including in combination, a fixed plate-supporting cylindrical member, a plurality of movable plate;sup

porting members having cylindrical facesrespectlvely and gear actuated cam means for outwardly into conformity and continuity.

fixed cylindrical member.

5. A printingl cylinder including in combination, a fixed plate-supporting cylindrical member, a plurality of pivotally mounted plate-supporting members having cylindrical faces respectively and gear actuated cam means for synchronously swinging said pivotallv mounted members into and out of conformity with said fixed cylindrical member.

6.l A printing cylinder including in com-A bination, a flexible printing plate adapted to encircle t-he cylinder, said plate having its longitudinal edges fixed in abutting tongues respectively, each of said tongues having inclined faces opposite their abutting portions respectively, a dovetailed groove lengthwise in the face of said cylinder for receiving said tongues, a plurality of synchronously operable means for clamping said tongues together and against one side of said dovetailed groove and means forlstraining said plate in position.

7. The combination of a printing cylinder, a groove 49 lengthwise in the face thereof,

` a tongue 23 for engagementwith said groove,

lip holding means in said tongue, a flexible integral printing plate 25 adapted to encircle the cylinder, the opposite longitudinal edges of said plate having abutting portions 54 and lip portions 53 formed from the plate itself and of uniform thickness therewith for engagement with said lip holding means in the tongue and means for securing said lip portions in engagement with the lip holding means. l

turning inwardly portions of said plate edge for engagement with said lip holding means in the tongues, respectively, and means for securing said lip portions in engagement with the lip holding means.

9. The combination of tongues 16, 1S having lip holding means 27, 29, respectively,

therein, a fiexible integral printing plate 25, the opposite longitudinal edges of said plate having alternate abutting portions 54 and lip portions 53 formed from the plate itself and of uniform thickness therewith for engagement with .said lip holding means in the tongues, respectively, and means for securing said lip portions in engagement with the lip holding means.

l0. The combination of tong-ues 16, 18 having lip holding means 27, 29, respectively, therein, a flexible printing plate 25, the opposite longitudinal edges of said plate having integral lip portions 53 formed by turning inwardly portions of said plate edge for engagement with said lip holding means in-the tongues, respectively, and means for removably securing said lip portions in engagement with the lip holding means.

Signed at New York, N. Y., this 25th day of April nineteen hundred and eleven, before two subscribing witnesses.

WILLIAM H. BANZETT. Witnesses:

vHALsr A. CRoU'r, J ULIUs SCHWAB. 

